Feeding apparatus for hand or breast drills



D. MOOK Filed July 13 1923 INVENTOR .Dean Nook A%I:V EY.

FEEDING APPARATUS FOR HAND OR BREAST DRILLS Fgb. 19 1924.

Patented Feb. 19, 1924.

DEAN MODE, OF ROCHESTER, NEW YORK.

FEEDING APPARATUS FOR HAND OR BREAST DRILLS.

Application filed July 13, 1923. Serial No. 651,259.

To aZZ whom it may concern.

Be it known that I, DEAN Moon, citizen of the United States, residing atRochester,

in the county of Monroe and State of New York, have invented certain newand useful Improvements in Feeding Apparatus for Hand or Breast Drills,of which the following is a specification.

The object of this invention is to provide a new and improved apparatusin the form of a feeding mechanism for hand or breast drills with whichsuch a drill can be simultaneously rotated with one hand and fed intothe stock to be drilled with the other hand.

A further object of the invention is to provide a socket or support forthe handle of the hand or breast drill in which the drill is whollysupported and held in line in the direction in which the drill is to befed.

Another object of this invention is to construct the feeding apparatusso that it can be mounted in a vise and held therein in any angularposition for performing a drilling operation.

These and other objects of this invention will be fully illustrated inthe drawing, described in the specification and pointed out in theclaims at the end thereof.

In the accompanying drawing:

Figure 1 is a partial top plan view and longitudinal sectional view ofthe apparatus.

Figure 2 is a cross section of the apparatus, the section being taken onthe line 2"2 of Figure 1.

Figure 3 is a top plan view of the apparatus.

In the figures of the drawing like reference numerals indicate likeparts.

Hand or breast drills depend for their feeding on the weight of the bodyor the pressure which the hand or chest can exert against the handle ofsuch a drill. For work that is not hard to drill and for workmen who canhold the drill in line with the direction of the hole to be drilled thisis not diflicult, but when the material to be drilled is hard or toughand but little progress can be made by forcing the drill against thestock or when absolute accuracy is required the hand or breast drillmust be provided with a special apparatus that will permit the feedingof the drill uniformly and with a greater pressure than is possible. toproduce with the body in order to do good work.

Such an apparatus forms the subject matter of my present invention andas illustrated in the figures comprises among other parts a hollowcasing 1 which serves both for the housing of the apparatus and thesocket in-which the handle of the hand or breast drill is held in place.The apparatus is preferably mounted in a vise 2 and for this purpose abearing block 3 is provided on the apparatus. This bearing block isrectangular in outline and can be clamped in place between the two jawsof the vise 2. A spindle 4: is mounted to rotate in the bearing of thebearing block and projects 'to either side of the vise. At the left handside of the vise the handle 5 is formed on the spindle by means of whichthe spindle is rotated. At the right hand side of the vise the spindleprojects into the housing land has the feed screw 6 formed on the endthereof. In the housing are mounted a pair of wooden bearing blocks 7and 8 between which the nut 9 is held in place. The feed screw 6 isthreaded into the nut 9 so that on the rotation of the spindle the endof the feed screw is fed forward or back in the housing 1.

The wooden bearing blocks in front and back of the nut 9 are held inplace between two washers 10 and 11 one in front of the block 8 and theother in back of the block 7. In addition to this a pair of pins 12 and13 projectthrough the housing in front of the washer 11 and embrace theouter end of the feed screw the pins being riveted to the walls of thehousing on the outside thereof in any suitable manner.

The two pins 12 and 13 hold the bearing blocks from sliding toward thefront end of the housing while the bearing block 3 held between the jawsof the vise serves as the thrust bearing that prevents these parts frommoving out of the rear of the housing when the feed screw is advanced.As will be seen from the figures of the drawing the bearing block 3 isslightly larger than the housing so that when the bearing block 3 isclamped between the jaws of the vise ofthe housing can slide betweenthese jaws and be held from rotating with the feed screw, by thisinsertion of the housing between the aws of the vise.

One of the sides of the housing is hinged thereto and a clasp 14: isprovided on the adjacent side to lock the hinged side to the housing.This is for the purpose of inserting the handle of the drill into thehousing from one side and then clamping it in place therein by closingthe hinged side. The socket thus formed grips the handle tightly asillustrated in Figure 1.

In this way the drill is held in a suitable chuck ready for use. Thestock to be drilled may be held in any suitable manner as for instancein a vise, and the drill will be fed into it by rotating the spindle ofthe apparatus as above described.

I claim- 1. A feeding mechanism for hand or breast drills comprising ahousing forming a socket for holding the handle of the hand or breastdrill in one end of said housing, a pair of bearing blocks held in placein the other end of said housing, a nut held in place between saidbearing blocks, a feed screw threaded into said nut and passing throughsaid bearing blocks, a spindle forming an extension of said feed screwand projecting from said housing, a third bearing block for said spindleto rotate therein and a handle formed on the end of said spindle, saidthird bearing block being adapted to be rigidly clamped in place betweenthe jaws of a vise and said housing being adapted to project'between thejaws of the vise and be held against rotation during the feeding of saidfeeding mechanism.

2. A feeding mechanism for hand or breast drills comprising a housingforming a socket for holding thehandle of the hand or breast drill inone end of said housing, a pair of bearing bloeksheld in place in theother end of said housing, a nut held in place between said bearingblocks, a feed screw threaded into said nut and passing through saidbearing blocks, a spindle form ing an extension of said feed screw andprojecting from said housing, a third bearing block for said spindle torotate therein and a handle. formed on the end of said spindle, saidthird bearing block being adapted to be rigidly clamped in place betweenthe jaws of a vise and said housing being adapted to project between thejaws of the vise and beheld against rotation during the feeding of saidfeeding mechanism, one side ofsaid housing being hinged thereto for thepur pose of inserting the handle of the breast or hand drill into theside of said housing, a clasp for locking the hinged side to saidhousing.

In testimony whereof- I atfix my signature.

' DEAN MOOK.

